diff --git a/jest.config.js b/jest.config.js
index 3d932fd0..26ebdd26 100644
--- a/jest.config.js
+++ b/jest.config.js
@@ -1,13 +1,16 @@
+const { join } = require('path');
+
 /*
  * For a detailed explanation regarding each configuration property and type check, visit:
  * https://jestjs.io/docs/configuration
  */
 module.exports = {
-  restoreMocks: true,
   collectCoverage: true,
   coverageDirectory: 'coverage',
   coverageProvider: 'v8',
+  modulePathIgnorePatterns: ['<rootDir>/.build', '<rootDir>/dist/', '<rootDir>/build/'],
   preset: 'ts-jest',
+  restoreMocks: true,
+  setupFiles: [join(__dirname, './jest.setup.js')],
   testEnvironment: 'jest-environment-node',
-  modulePathIgnorePatterns: ['<rootDir>/.build', '<rootDir>/dist/', '<rootDir>/build/'],
 };
diff --git a/jest.setup.js b/jest.setup.js
new file mode 100644
index 00000000..d2230d23
--- /dev/null
+++ b/jest.setup.js
@@ -0,0 +1,20 @@
+// Sometimes Jest can have issues when trying to spy on an internal module. Import
+// and use this function as a workaround at the top of your test.
+//
+// Credit: https://github.com/facebook/jest/issues/6914#issuecomment-654710111
+const { defineProperty } = Object;
+
+Object.defineProperty = function (object, name, meta) {
+  if (meta.get && !meta.configurable) {
+    // it might be an ES6 exports object
+    return defineProperty(object, name, {
+      ...meta,
+      configurable: true, // prevent freezing
+    });
+  }
+
+  return defineProperty(object, name, meta);
+};
+
+// Disable logger if it is not explicitly set to true.
+process.env.LOGGER_ENABLED = process.env.LOGGER_ENABLED || 'false';
diff --git a/packages/api/README.md b/packages/api/README.md
index 2d2c62c6..5ab19fce 100644
--- a/packages/api/README.md
+++ b/packages/api/README.md
@@ -12,6 +12,18 @@ the data in memory and provides endpoints to push and retrieve beacon data.
 2. `cp .env.example .env` - To copy the example environment variables. Optionally change the defaults.
 3. `pnpm run dev` - To start the API server. The port number can be configured in the configuration file.
 
+### Testing
+
+To run the tests:
+
+```sh
+pnpm run test
+# or to run test only from a specific files (path substring search)
+pnpm run test schema
+# or to enable logger (by default the logger is disabled by jest.setup.js).
+LOGGER_ENABLED=true pnpm run test
+```
+
 ## Configuration
 
 The API is configured via combination of [environment variables](#environment-variables) and
diff --git a/packages/pusher/README.md b/packages/pusher/README.md
index 750370ad..0476a96c 100644
--- a/packages/pusher/README.md
+++ b/packages/pusher/README.md
@@ -29,6 +29,18 @@ To start the the pusher in dev mode run the following:
 5. `pnpm run dev` - To run the pusher. This step assumes already running signed API as specified in the `pusher.json`
    configuration.
 
+### Testing
+
+To run the tests:
+
+```sh
+pnpm run test
+# or to run test only from a specific files (path substring search)
+pnpm run test schema
+# or to enable logger (by default the logger is disabled by jest.setup.js).
+LOGGER_ENABLED=true pnpm run test
+```
+
 ## Configuration
 
 Pusher can be configured via a combination of [environment variables](#environment-variables) and